USA: 2011 Nissan Leaf: One Year On, How Healthy Is The Battery Pack?

It’s now been well over a year since the first 2011 Nissan Leafs were delivered to customers in California, Oregon, Washington and Arizona.

But after one year, how are early Nissan Leafs performing? Are their battery packs still healthy, or have they started to show signs of wear already?

According to anecdotal evidence from popular Nissan Leaf Internet forum MyNissanLeaf, most — if not all — Leafs so far are being given a clean bill of health on their first annual service.

That includes their 24 kilowatt-hour battery packs.

As part of Nissan’s annual service schedule for the Leaf, Nissan engineers download each car’s battery history, detailing charging, use and power consumption data.

Nissan then analyzes this information, producing a simple battery report for the customer, detailing overall health of the battery pack.

Split into five sections, the Battery Information Sheet covers remaining battery capacity expressed as a 12 bar graph, along with an five star rating for frequent use of quick charging; frequent charging when battery state of charge is already high; too much electric consumption; and long term parking with a high state of charge.

2011 Nissan Leaf Software Update

With first year odometer readings ranging from a few thousand miles to well over 18,000, all — except one — Leafs appear to have suffered nothing more than negligible battery degradation, scoring full marks for battery capacity.
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